半刚性基层材料动态抗压模量试验研究  

Experimental Study on Dynamic Compressive Modulus of Semi-Rigid Base Materials

作　　者：张军华 王晓燕 李彬 余四新 郭建民 杨永奇 李玉鑫 

机构地区：[1]山东高速股份有限公司,山东 济南 [2]山东省交通科学研究院,高速养护技术行业重点实验室,山东 济南

出　　处：《土木工程》2019年第10期1431-1437,共7页Hans Journal of Civil Engineering

摘　　要：本文通过研究二灰碎石、石灰稳定土和二灰土三种不同的半刚性基层材料在不同的应变和频动条件下的动态模量。可以得出这三种半刚性基层在应力状态下,动态模量随加载频率的增大而增大,同时动态模量具有应力依赖性,即随着荷载的增大(轴向应变增大),动态模量减小的规律。This paper studies the dynamic modulus of three different semi-rigid base materials (two ash gravel, lime improved soil and two lime soil) under different strain and frequency conditions. Under the same stress state, the dynamic modulus of these three semi-rigid base materials increases with the increase of loading frequency. At the same time, the dynamic modulus has stress dependence. As the load increases (the axial strain increases), the dynamic modulus of this material decreases.

关 键 词：动态抗压模量 半刚性基层 应变 频率 

分 类 号：U41[交通运输工程—道路与铁道工程]